Using the browser zooming feature (ctrl+/-) should increase the text size.
Is is ok for you ?
We are working on a new layout and a more straightforward navigation.
We would love to have your feedback about our current design.

You want to move a card in another project when dropping it a column. If we do this, you do understand that the card won't be available anymore in the source project (in which you perform the drop). Is this what you want to achieve ?

Another possibility would be to have an automated task that creates a card link (or mirror) in another project.

2 things here :
- we're lacking of a way to select multiple cards easily (with mouse or keyboards). The only ways are either to use batch action on columns, or on cards matching the current project filter
- we don't have a batch action for card deletion.

We will add the latter soon.
For the first one, we will start working on this during Q4 of 2018.

Thank you for your feedback.
If I understand correctly, If we represent the card hierarchy as a tree, you only want to use the leaves (card without sub-cards) to track progress of any branch (cards with sub-cards).

Our product team will review the idea.
I let you know about any progress on this matter.

We've added a feature that might help to track your progress: milestones.

Once you've created a milestone and added cards to it, you can filter your board to only cards of the milestone. You can also view your milestones in the calendar view mode, and track how many cards of a milestone is open/completed.

Indeed we need to add better visualization of progress and be better at extracting information for managers. We are actively working on that and if you have any suggestions on what you'd like to see, we would love to hear about it!

Supporting other services is indeed planned. (eta: a few weeks - lots of other stuff planned before that).